Английская Википедия:1996 PW
Шаблон:Use dmy dates Шаблон:Infobox planet
Шаблон:Mp is an exceptionally eccentric trans-Neptunian object and damocloid on an orbit typical of long-period comets but one that showed no sign of cometary activity around the time it was discovered.[1] The unusual object measures approximately Шаблон:Convert in diameter and has a rotation period of 35.4 hours and likely an elongated shape.[2]
Description
Шаблон:Mp orbits the Sun at a distance of 2.5–504 AU once every 4,033 years (semi-major axis of 253 AU). Its orbit has an eccentricity of 0.99 and an inclination of 30° with respect to the ecliptic.[3]
Simulations indicate that it has most likely come from the Oort cloud, with a roughly equal probability of being an extinct comet and a rocky body that was originally scattered into the Oort cloud. The discovery of Шаблон:Mp prompted theoretical research that suggests that roughly 1 to 2 percent of the Oort cloud objects are rocky.[4][5]
Шаблон:Mp was first observed on 9 August 1996 by the Near-Earth Asteroid Tracking (NEAT) automated search camera on Haleakala Observatory, Hawaii. It is the first object that is not an active comet discovered on an orbit typical of long-period comets.[4]
Шаблон:Mp has a rotation period of Шаблон:Val hours and a double-peaked lightcurve with a high amplitude of Шаблон:Val magnitude (Шаблон:Small).[2][1] Its spectrum is moderately red and featureless,[6] typical of D-type asteroids and bare comet nuclei.[1][5][6] Its spectrum suggests an extinct comet.[6] The upper limit on Шаблон:Mp's dust production is Шаблон:Val.[1]
See also
References
External links
- 1996 PW, Small Bodies Data Ferret
- Шаблон:AstDys
- Шаблон:JPL small body
Шаблон:Trans-Neptunian objects Шаблон:Small Solar System bodies Шаблон:Authority control
- ↑ 1,0 1,1 1,2 1,3 Ошибка цитирования Неверный тег
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<ref>; для сносокHicks-2000не указан текст
- Английская Википедия
- Trans-Neptunian objects
- Scattered disc and detached objects
- Damocloids
- Unusual minor planets
- Minor planet object articles (unnumbered)
- Discoveries by NEAT
- Ld-type asteroids (SMASS)
- Astronomical objects discovered in 1996
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- Википедия
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